Aldrich, Minnesota, sits in USDA hardiness zone 4a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
The conditions favor cabbage, cranberry, turkish rocket, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Aldrich, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Aldrich lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Aldrich — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Aldrich — the short answer
Aldrich, Minnesota: USDA zone 4a, about 161 days between hard freezes, across 314 acres of city.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~161
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 314 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 4a is Aldrich's average, not your lot's — a low corner or a tree line moves it. Against Aldrich's 161-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Aldrich
Each reading below is measured for Aldrich itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredAldrich runs about 161 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredAldrich sits in USDA hardiness zone 4a.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Aldrich is in
Aldrich sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Aldrich's own centroid rather than borrowed from Wadena County.
What Grows in Aldrich
Every plant below cleared Aldrich's own zone 4a and its 161-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Aldrich?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Apr 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 9 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Aldrich
Closest first, within ~10 miles of Aldrich. Listing isn't leaking, and distance isn't exposure.
- 134N34W35CAB 01Nitrate · 100 ft
- Aldrich TractorUnderground Storage Tanks · 2.0 mi
- 134N34W32DCB1Nitrate · 2.9 mi
- 577495Nitrate · 3.0 mi
- Verndale Custom HomesUnderground Storage Tanks · 3.1 mi
- BNSF RAILWAYBrownfields · 3.2 mi
- Verndale All Star ServiceUnderground Storage Tanks · 3.7 mi
- BOUNDS BODY SHOPBrownfields · 3.9 mi
- ISD 818 VERNDALE PUBLIC SCHOOLSBrownfields · 3.9 mi
- Verndale Public SchoolUnderground Storage Tanks · 4.0 mi
- 134N34W19ABD 01Nitrate · 4.2 mi
- VERNDALE SHOPBrownfields · 4.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Aldrich's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Aldrich.
Total Sites
142
within ~10 miles of Aldrich
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Aldrich
Severity Distribution
within ~10 miles of Aldrich
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Aldrich, Nitrate runs higher than the national average — 48 sites within ~10 miles of Aldrich. That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Aldrich
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Aldrich average
Your land is one point inside Aldrich
Everything above resolves to Aldrich as a whole — one PHZM band and one 28°F frost record, read across 314 acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at city scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Aldrich Average
Aldrich Average
- ●USDA Zones 4a, averaged across Aldrich
- ●One soil character for all of Aldrich
- ●Frost dates read at Aldrich's scale: May 1 to Oct 9
YOUR Parcel
- ✓Your exact zone, not Aldrich's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Aldrich
Pull a site-specific report for your exact address in Aldrich, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Aldrich averages can't show:
We read public map data around Aldrich — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Aldrich average
How we know this about Aldrich
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Aldrich’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at city grain anywhere on this page — there is no city-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Aldrich
When does frost risk typically end in Aldrich?
The last hard freeze (28°F) in Aldrich typically lands around May 1, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about May 22.
When is the first frost in Aldrich?
The first hard freeze (28°F) in Aldrich typically arrives around Oct 9, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 25, so the watching starts about Sep 9 — about 161 days after the spring freeze cleared.
How long is the growing season in Aldrich?
Measured between 28°F hard freezes, Aldrich sees about 161 frost-free days — roughly May 1 through Oct 9, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 22 to Sep 25, about 126 days.
Is the soil safe to grow vegetables in Aldrich?
The federal record around Aldrich shows 142 documented sites, mostly Brownfields entries (56), the nearest Nitrate record under a tenth of a mile out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Aldrich?
From about Sep 9 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Oct 9 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Oct 9. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Aldrich's scale — its 4a band and its 161-day season. Your yard writes its own version of Aldrich's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Aldrich’s own scale
6 of the readings below were taken at Aldrich's own scale — its own ~161-day season between 28°F freezes, the 314 acres it covers and 142 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Aldrich's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Aldrich's own 28°F hard-freeze dates, about May 1 and Oct 9 and the ~161-day span between themNOAA 1991–2020 Climate Normals
- 142 documented contamination sites on the federal record near Aldrich, the closest Nitrate record under a tenth of a mile out from the town centreFederal environmental registers
- Aldrich's boundary and the 314 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~161-day seasonGrowable Ground crop-matching engine
- The ecoregion at Aldrich's own centroid, the North Central Hardwood ForestsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Aldrich's 314 acres read through its county's SSURGO summaryfrom Wadena County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Wadena County
- The growing challenges every Minnesota grower plans around — written at state scale, so they stay on the state guidefrom Minnesota
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Wadena County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Aldrich's 314 acreswhy one lot differs from the next →
- Which side of Aldrich you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 314 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record under a tenth of a mile out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Aldrich-wide figureread your own land →
More in Minnesota
Wider growing context
What grows across MinnesotaAldrich sits outside our named growing regions, so Minnesota as a whole is its closest context here.